Which of the following terms refers to RNA only? Double helix Thymine Uracil Cyt

Question

Which of the following terms refers to RNA only? Double helix Thymine Uracil Cytosine Guanine Codons are located on: Ribosomes rRNA mRNA rRNA DNA EcoR1 and HindIII are two different restriction enzymes If the DNAs of different organisms are cut as described below, which DNAs could NOT join together and be permanently sealed? Human DNA cut with EcoR 1/chimp DNA cut with EcoR1 Prokaryotic DNA cut with HindlII/eukaryotic DNA cut with HindlII Mouse liver DNA cut with EcoR1/mouse kidney DNA cut with EcoR1 Mouse DNA cut with HindlII/chimp DNA cut with HindlII

Explanation / Answer

Answers: -

21.option"c"-uracil

Explanation: -

**Uracil is one of the four nucleobases in the nucleic acid of RNA that are represented by the letters A, G, C and U. The others are adenine, cytosine, and guanine. In RNA, uracil binds to adenine via two hydrogen bonds.

22.option-"c"-m-RAN

EXPLANATION: -Anticodons are found on molecules of tRNA. Their function is to base pair with the codon on a strand of mRNA during translation. This action ensures that the correct amino acid will be added to the growing polypeptide chain.

23.option-"e"-bacterial DNA cut with E.coR1 and mouse DNA cut with HindIII.

EXPLANATION: -because E.coR1 and HindIII enzymes do not recognise same sequence to cut DNA and cannot be sealed.

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